/*
 * Copyright 2025 LinQingYing. and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * The use of this source code is governed by the Apache License 2.0,
 * which allows users to freely use, modify, and distribute the code,
 * provided they adhere to the terms of the license.
 *
 * The software is provided "as-is", and the authors are not responsible for
 * any damages or issues arising from its use.
 *
 */

package org.cangnova.cangjie.types.error

import org.cangnova.cangjie.descriptors.*
import org.cangnova.cangjie.descriptors.impl.AbstractTypeAliasDescriptor
import org.cangnova.cangjie.name.Name
import org.cangnova.cangjie.storage.LockBasedStorageManager
import org.cangnova.cangjie.types.ErrorUtils
import org.cangnova.cangjie.types.SimpleType
import org.cangnova.cangjie.types.TypeSubstitutor

class ErrorTypeAliasDescriptor : AbstractTypeAliasDescriptor(
    LockBasedStorageManager.NO_LOCKS, ErrorUtils.errorModule,
    name = Name.ERROR_NAME,
    sourceElement = SourceElement.NO_SOURCE,
    visibilityImpl = DescriptorVisibilities.PUBLIC
) {
    override fun getTypeConstructorTypeParameters(): List<TypeParameterDescriptor> {
        return emptyList()
    }

    override val underlyingType: SimpleType
        get() = ErrorUtils.createErrorType(ErrorTypeKind.UNRESOLVED_TYPE_ALIAS)
    override val expandedType: SimpleType
        get() = ErrorUtils.createErrorType(ErrorTypeKind.UNRESOLVED_TYPE_ALIAS)
    override val classDescriptor: ClassDescriptor?
        get() = null
    override val defaultType: SimpleType
        get() = ErrorUtils.createErrorType(ErrorTypeKind.UNRESOLVED_TYPE_ALIAS)

    override fun substitute(substitutor: TypeSubstitutor): ClassifierDescriptorWithTypeParameters? {
        return null
    }


}